/******************************************************************************
* Copyright (C) 2010 - 2021 Xilinx, Inc.  All rights reserved.
* Copyright (c) 2022 - 2023 Advanced Micro Devices, Inc. All Rights Reserved.
* SPDX-License-Identifier: MIT
******************************************************************************/

/*****************************************************************************/
/**
*
* @file xgpiops.h
* @addtogroup gpiops Overview
* @{
* @details
*
* The Xilinx PS GPIO driver. This driver supports the Xilinx PS GPIO
* Controller.
*
* The GPIO Controller supports the following features:
*	- 6 banks
*	- Masked writes (There are no masked reads)
*	- Bypass mode
*	- Configurable Interrupts (Level/Edge)
*
* This driver is intended to be RTOS and processor independent. Any needs for
* dynamic memory management, threads or thread mutual exclusion, virtual
* memory, or cache control must be satisfied by the layer above this driver.
*
* Here is GPIO Bank and Pin mapping information for different platforms.
* Zynq:
*   	PS GPIO contain 4 banks and 118 pins
* 	Bank 0 MIO pins 0 - 31
* 	Bank 1 MIO pins 32 - 53
* 	Bank 2 MIO pins 54 - 85
* 	Bank 3 EMIO signals 86 - 117
*
* Zynq Ultrascale+ MP:
*   PS GPIO contain 6 banks and 174 pins
*   	Bank 0 MIO pins 0 - 25
*   	Bank 1 MIO pins 26 - 51
*   	Bank 2 MIO pins 52 - 77
*   	Bank 3 EMIO signals 78 - 109
*   	Bank 4 EMIO signals 110 - 141
*   	Bank 5 EMIO signals 142 - 173

* Versal: Two GPIOPS instances PMC GPIO and PS GPIO
*   PMC GPIO contain 4 banks and 116 pins
*       Bank 0 MIO pins 0 - 25
*       Bank 1 MIO pins 26 - 51
*       Bank 3 EMIO signals 52 - 83
*       Bank 4 EMIO signals 84 - 115
*   PS GPIO contains 2 banks and 58 pins
* 	Bank 0 MIO pins 0 - 25
*   	Bank 3 EMIO signals 26-57
*
* This driver supports all the features listed above, if applicable.
*
* <b>Driver Description</b>
*
* The device driver enables higher layer software (e.g., an application) to
* communicate to the GPIO.
*
* <b>Interrupts</b>
*
* The driver provides interrupt management functions and an interrupt handler.
* Users of this driver need to provide callback functions. An interrupt handler
* example is available with the driver.
*
* <b>Threads</b>
*
* This driver is not thread safe. Any needs for threads or thread mutual
* exclusion must be satisfied by the layer above this driver.
*
* <b>Asserts</b>
*
* Asserts are used within all Xilinx drivers to enforce constraints on argument
* values. Asserts can be turned off on a system-wide basis by defining, at
* compile time, the NDEBUG identifier. By default, asserts are turned on and it
* is recommended that users leave asserts on during development.
*
* <b>Building the driver</b>
*
* The XGpioPs driver is composed of several source files. This allows the user
* to build and link only those parts of the driver that are necessary.
* <br><br>
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver   Who  Date     Changes
* ----- ---- -------- -----------------------------------------------
* 1.00a sv   01/15/10 First Release
* 1.01a sv   04/15/12 Removed the APIs XGpioPs_SetMode, XGpioPs_SetModePin
*                     XGpioPs_GetMode, XGpioPs_GetModePin as they are not
*		      relevant to Zynq device.The interrupts are disabled
*		      for output pins on all banks during initialization.
* 1.02a hk   08/22/13 Added low level reset API
* 2.1   hk   04/29/14 Use Input data register DATA_RO for read. CR# 771667.
* 2.2	sk	 10/13/14 Used Pin number in Bank instead of pin number
* 					  passed to APIs. CR# 822636
* 3.00  kvn  02/13/15 Modified code for MISRA-C:2012 compliance.
* 3.1	kvn  04/13/15 Add support for Zynq Ultrascale+ MP. CR# 856980.
*       ms   03/17/17 Added readme.txt file in examples folder for doxygen
*                     generation.
*       ms   04/05/17 Added tabspace for return statements in functions of
*                     gpiops examples for proper documentation while
*                     generating doxygen.
* 3.3   ms   04/17/17 Added notes about gpio input and output pin description
*                     for zcu102 and zc702 boards in polled and interrupt
*                     example, configured Interrupt pin to input pin for
*                     proper functioning of interrupt example.
* 3.4   aru  08/17/18 Resolved MISRA-C mandatory violations. CR# 1007751
* 3.5   sne  03/01/19 Fixes violations according to MISRAC-2012
*                     in safety mode and modified the code such as
*                     Use of mixed mode arithmetic,Declared the pointer param
*                     as Pointer to const,Casting operation to a pointer,
*                     Literal value requires a U suffix.
* 3.5   sne  03/14/19 Added Versal support.
* 3.6   mus  04/05/19 Replaced XPLAT_versal macro with XPLAT_VERSAL, to be in
*                     sync with standalone BSP
* 3.6	sne  06/12/19 Fixed IAR compiler warning.
* 3.6   sne  08/14/19 Added interrupt handler support on versal.
* 3.7	sne  12/04/19 Reverted versal examples support.
* 3.8   sne  08/28/20 Modify Makefile to support parallel make execution.
* 3.8	sne  09/17/20 Added description for Versal PS and PMC GPIO pins.
* 3.9	sne  03/15/21 Fixed MISRA-C violations.
* 3.11  sg   02/23/23 Update bank and pin mapping information.
* 3.12  gm   07/11/23 Added SDT support.
*
* </pre>
*
******************************************************************************/
#ifndef XGPIOPS_H		/* prevent circular inclusions */
#define XGPIOPS_H		/**< by using protection macros */

#ifdef __cplusplus
extern "C" {
#endif

/***************************** Include Files *********************************/

#include "xstatus.h"
#include "xgpiops_hw.h"
#include "xplatform_info.h"

/************************** Constant Definitions *****************************/

/** @name Interrupt types
 *  @{
 * The following constants define the interrupt types that can be set for each
 * GPIO pin.
 */
#define XGPIOPS_IRQ_TYPE_EDGE_RISING	0x00U  /**< Interrupt on Rising edge */
#define XGPIOPS_IRQ_TYPE_EDGE_FALLING	0x01U  /**< Interrupt Falling edge */
#define XGPIOPS_IRQ_TYPE_EDGE_BOTH	0x02U  /**< Interrupt on both edges */
#define XGPIOPS_IRQ_TYPE_LEVEL_HIGH	0x03U  /**< Interrupt on high level */
#define XGPIOPS_IRQ_TYPE_LEVEL_LOW	0x04U  /**< Interrupt on low level */
/** @}*/

#define XGPIOPS_BANK_MAX_PINS		(u32)32 /**< Max pins in a GPIO bank */
#define XGPIOPS_BANK0			0x00U  /**< GPIO Bank 0 */
#define XGPIOPS_BANK1			0x01U  /**< GPIO Bank 1 */
#define XGPIOPS_BANK2			0x02U  /**< GPIO Bank 2 */
#define XGPIOPS_BANK3			0x03U  /**< GPIO Bank 3 */
#define XGPIOPS_BANK4			0x04U  /**< GPIO Bank 4 */
#define XGPIOPS_BANK5			0x05U  /**< GPIO Bank 5 */

#define XGPIOPS_MAX_BANKS_ZYNQMP		0x06U  /**< Max banks in a
										*	Zynq Ultrascale+ MP GPIO device
										*/
#define XGPIOPS_MAX_BANKS		0x04U  /**< Max banks in a Zynq GPIO device */

#define XGPIOPS_DEVICE_MAX_PIN_NUM_ZYNQMP	(u32)174 /**< Max pins in the
						  *	Zynq Ultrascale+ MP GPIO device
					      * 0 - 25,  Bank 0
					      * 26 - 51, Bank 1
					      *	52 - 77, Bank 2
					      *	78 - 109, Bank 3
					      *	110 - 141, Bank 4
					      *	142 - 173, Bank 5
					      */
#define XGPIOPS_DEVICE_MAX_PIN_NUM	(u32)118 /**< Max pins in the Zynq GPIO device
					      * 0 - 31,  Bank 0
					      * 32 - 53, Bank 1
					      *	54 - 85, Bank 2
					      *	86 - 117, Bank 3
					      */

/**************************** Type Definitions *******************************/

/****************************************************************************/
/**
 * This handler data type allows the user to define a callback function to
 * handle the interrupts for the GPIO device. The application using this
 * driver is expected to define a handler of this type, to support interrupt
 * driven mode. The handler executes in an interrupt context such that minimal
 * processing should be performed.
 *
 * @param	CallBackRef is a callback reference passed in by the upper layer
 *		when setting the callback functions for a GPIO bank. It is
 *		passed back to the upper layer when the callback is invoked. Its
 *		type is not important to the driver component, so it is a void
 *		pointer.
 * @param	Bank is the bank for which the interrupt status has changed.
 * @param	Status is the Interrupt status of the GPIO bank.
 *
 *****************************************************************************/
typedef void (*XGpioPs_Handler) (void *CallBackRef, u32 Bank, u32 Status);

/**
 * This typedef contains configuration information for a device.
 */
typedef struct {
#ifndef SDT
	u16 DeviceId;		/**< Unique ID of device */
#else
	char *Name;
#endif
	UINTPTR BaseAddr;		/**< Register base address */
#ifdef SDT
	u16 IntrId;		/** Bits[11:0] Interrupt-id Bits[15:12]
				 * trigger type and level flags */
	UINTPTR IntrParent; 	/** Bit[0] Interrupt parent type Bit[64/32:1]
				 * Parent base address */
#endif
} XGpioPs_Config;

/**
 * The XGpioPs driver instance data. The user is required to allocate a
 * variable of this type for the GPIO device in the system. A pointer
 * to a variable of this type is then passed to the driver API functions.
 */
typedef struct {
	XGpioPs_Config GpioConfig;	/**< Device configuration */
	u32 IsReady;			/**< Device is initialized and ready */
	XGpioPs_Handler Handler;	/**< Status handlers for all banks */
	void *CallBackRef; 		/**< Callback ref for bank handlers */
	u32 Platform;			/**< Platform data */
	u32 MaxPinNum;			/**< Max pins in the GPIO device */
	u8 MaxBanks;			/**< Max banks in a GPIO device */
        u32 PmcGpio;                    /**< Flag for accessing PS GPIO for versal*/
} XGpioPs;

/************************** Variable Definitions *****************************/
extern XGpioPs_Config XGpioPs_ConfigTable[];

/***************** Macros (Inline Functions) Definitions *********************/

/************************** Function Prototypes ******************************/

/* Functions in xgpiops.c */
s32 XGpioPs_CfgInitialize(XGpioPs *InstancePtr, const XGpioPs_Config *ConfigPtr,
			   u32 EffectiveAddr);

/* Bank APIs in xgpiops.c */
u32 XGpioPs_Read(const XGpioPs *InstancePtr, u8 Bank);
void XGpioPs_Write(const XGpioPs *InstancePtr, u8 Bank, u32 Data);
void XGpioPs_SetDirection(const XGpioPs *InstancePtr, u8 Bank, u32 Direction);
u32 XGpioPs_GetDirection(const XGpioPs *InstancePtr, u8 Bank);
void XGpioPs_SetOutputEnable(const XGpioPs *InstancePtr, u8 Bank, u32 OpEnable);
u32 XGpioPs_GetOutputEnable(const XGpioPs *InstancePtr, u8 Bank);
#ifdef versal
void XGpioPs_GetBankPin(const XGpioPs *InstancePtr,u8 PinNumber,u8 *BankNumber, u8 *PinNumberInBank);
#else
void XGpioPs_GetBankPin(u8 PinNumber,u8 *BankNumber, u8 *PinNumberInBank);
#endif

/* Pin APIs in xgpiops.c */
u32 XGpioPs_ReadPin(const XGpioPs *InstancePtr, u32 Pin);
void XGpioPs_WritePin(const XGpioPs *InstancePtr, u32 Pin, u32 Data);
void XGpioPs_SetDirectionPin(const XGpioPs *InstancePtr, u32 Pin, u32 Direction);
u32 XGpioPs_GetDirectionPin(const XGpioPs *InstancePtr, u32 Pin);
void XGpioPs_SetOutputEnablePin(const XGpioPs *InstancePtr, u32 Pin, u32 OpEnable);
u32 XGpioPs_GetOutputEnablePin(const XGpioPs *InstancePtr, u32 Pin);

/* Diagnostic functions in xgpiops_selftest.c */
s32 XGpioPs_SelfTest(const XGpioPs *InstancePtr);

/* Functions in xgpiops_intr.c */
/* Bank APIs in xgpiops_intr.c */
void XGpioPs_IntrEnable(const XGpioPs *InstancePtr, u8 Bank, u32 Mask);
void XGpioPs_IntrDisable(const XGpioPs *InstancePtr, u8 Bank, u32 Mask);
u32 XGpioPs_IntrGetEnabled(const XGpioPs *InstancePtr, u8 Bank);
u32 XGpioPs_IntrGetStatus(const XGpioPs *InstancePtr, u8 Bank);
void XGpioPs_IntrClear(const XGpioPs *InstancePtr, u8 Bank, u32 Mask);
void XGpioPs_SetIntrType(const XGpioPs *InstancePtr, u8 Bank, u32 IntrType,
			  u32 IntrPolarity, u32 IntrOnAny);
void XGpioPs_GetIntrType(const XGpioPs *InstancePtr, u8 Bank, u32 *IntrType,
			  u32 *IntrPolarity, u32 *IntrOnAny);
void XGpioPs_SetCallbackHandler(XGpioPs *InstancePtr, void *CallBackRef,
			     XGpioPs_Handler FuncPointer);
void XGpioPs_IntrHandler(const XGpioPs *InstancePtr);

/* Pin APIs in xgpiops_intr.c */
void XGpioPs_SetIntrTypePin(const XGpioPs *InstancePtr, u32 Pin, u8 IrqType);
u8 XGpioPs_GetIntrTypePin(const XGpioPs *InstancePtr, u32 Pin);

void XGpioPs_IntrEnablePin(const XGpioPs *InstancePtr, u32 Pin);
void XGpioPs_IntrDisablePin(const XGpioPs *InstancePtr, u32 Pin);
u32 XGpioPs_IntrGetEnabledPin(const XGpioPs *InstancePtr, u32 Pin);
u32 XGpioPs_IntrGetStatusPin(const XGpioPs *InstancePtr, u32 Pin);
void XGpioPs_IntrClearPin(const XGpioPs *InstancePtr, u32 Pin);

/* Functions in xgpiops_sinit.c */
#ifndef SDT
XGpioPs_Config *XGpioPs_LookupConfig(u16 DeviceId);
#else
XGpioPs_Config *XGpioPs_LookupConfig(u32 BaseAddress);
#endif
#ifdef __cplusplus
}
#endif

#endif /* end of protection macro */
/** @} */
